Manufacturing car-coupling pins



No Model.) J. WHILE.

MANUFACTURING GAR COUPLING PINS.

No. 273,417. Patented Mar. 6,1883.

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JOSEPH WHILE, OF CLEVELAND, OHIO.

MANUFACTURING CAR-COUPLING PI NS.

SPECIFICATION formingpart of Letters Patent No. 273,417, dated March 6,1883.

Application filed November-1,1881. (No model.) 7

To all whom it may concern:

Be it known that I, JOSEPH WHILE, of Cleveland, in the county ofOuyahoga and State of Ohio, have invented certain new and usefulImprovements in Manufacturing Oar- Ooupling Pins; andI do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use it, reference being had to the accompanyingdrawings, which form part of this specification.

My invention relates to car -coupling pins; and it consists in thepeculiar manner of manufacturingthe same, as will be hereinafter fullyset forth and claimed. I

In the drawings, Figure] is a side elevation of one form of machine usedto manufacture the pins. Fig. 2 isv an end view of the same, showing thepreferred manner of grooving the rolls. Fig. 3 shows a pin after havingpassed through the rolls, and Fig. 4 illustrates a tinished flat pinwith rounded edges.

A is a suitable frame, the same being provided preferably with threerolls, B,O, and I)- The rolls B and (l are geared togetherin such amanner that they revolve in the same direc tion, as indicated by thearrow, Fig. 1. I

The roll Disadjustable and provided with two movable or slidingbearings, E, one on each side of the roll D, preferablyoperated by meansof screws a and suitable gearing so connected that both ends of the rollI) are moved the same distance. The rolls B, G, and D are grooved, asshown in Fig. 2viz., to conform to the shape'of the pin intended to bemade.

My process is as follows: I take a piece of metal, somewhat larger indiameter and shorter than the pinis to be. This metal-preferably iron orsteelis subjected to heat until it has become sufficientlyhot. It isthen dropped lengthwise between the rolls B and D, and the roll B actsto draw it down until it comes in contact with the roll O. The roll D isnow fed up until the pin is drawn to the desired shape.

After the pin is rolled to the desired shape the roll D is caused tomove back and the pin falls to the floor or any suitable receptaclebeneath the machine. During the process of rolling I prefer to causewater to fall on the heated metal, and thus produce a better finish anda tougher or stronger pin.

The foregoing process is all that is necessary pins,cousisting inrolling the metal to form the complete shank and head and shoulder, and

then subjecting the shank portion to compression and flattening itsopposite sides, substantially as set forth. T

In testimony whereof I have signed my name to-this specification in thepresence of two subscribing witnesses. V

' JOSEPH \VHILE. Witnesses:

HENRY ABELS, W. ENGEL.

